Grain drier and cleaner



(No Model.)

L. O. PORTER 8v C. MGNIGOL.

GRAIN DRIER AND CLEANER.

Patented A131225, 1882.

WITNESSES A TORNEYS N. PETERS. Plmlwlnhugnphar. wmhmgm I74 l;

UNITED STATES PATENT OFFICE.

LEMUEL C. PORTER ANI) COLIN MCNICOL, OF WINONA, MINNESOTA.

GRAIN DRIER AND CLEANER.

SPECIFICATION forming part. of Letters Patent No. 257,064, dated April 25, 1882.

Application filed February 21, 1882. (No model.)

To all whom it may concern:

Be it known that we, LEMUEL C. PoR-TER and COLIN MCNIGOL, both citizens of the United States, and residents of Winona, in the county ot Winona and State of Minnesota, have invented a new and valuable Improvement in Grain Driers and Cleaners; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and gures of reference marked thereon.

Figure 1 of the drawings is a representation of a vertical sectional view of our grain drier and cleaner. Fig. 2 is a crossse-ctional view of the same. Fig. 3 is an end view.

This invention has relation to machines for drying, separating, and cleaning grain; and itconsists in the construction and novel arrangement ot' steam-pipes partially or wholly surrounding a rotary screen-reel in a dusttight case, inside guards or heads around the endsot' the reel, draft-openings at the feed end of the case, and a blowing or suction fan connected to the discharge end and located near the branches of the elevator-tube, all as hereinafter set forth, and especially pointed out in the claim appended.

In the accompanying drawings, the letterA designates a-dusttight case, made of wood or metal, and having slidesor doors B. In the lower part of the case are the hoppers C,hav ing the inclined mouths a, which join to form the bottom of the case and serve to lead oif the screenings which fall from the reel D, which is covered with wire-cloth I), and is provided with a shaft, c, which is seated in suita ble end bearings, and is rotated b v means of a belt or gearing. 'lhe reel is inclosed in the case from its receiving end to its discharging end, and is somewhat inclined toward the discharging end, as indicated.

Near each end 'of the ease is an inside partition, guard, orhead, E,haviug an opening to receive the end of the reel-screen, and serving to confine the draft and send it through the screen. In the end d of the case are the draftopenings e, each of which is regulated by means of avalve or swinging stop, g. Through this end of the case extends the feed-pipe F, whereby the grain is conveyed to the reel.

G indicates a steam-pipe, which extends back and forth under the reel in such a Inanner as to form a series of parallel longitudinal pipes, lying near the under side of the reel, the inlet-pipe G' being provided with a stop-valve, h, whereby the steam heat can be regulated or cut 0E altogether.

The series of pipes may extend entirely around the reel, if thought desirable; but for ordinary purposes the arrangement under the bottom ot'the reel will be found suflicient,the pipes being placed equidistant from the reelshat't, and forming a concave grating underthe reel, through which the screenings fall to the hoppers below. The heat'from the steam-pipe dries the screenings as they fall through its interspaces, and rising into the reel dries the grain in its passage therein,the accumulation of vapor being prevented by means of a suctionfan, L, having a pipe, H, which is connected to the discharging end E of the case near the reel-shaft. In -this manner a constant current offresh hot and d ry air is made to pass th rough the reel. A y

The grain is discharged by the spout S into the elevator-tube T,'whence it is conveyed by the elevator-buckets N to suitable receptacles. The fan-pipe H, being arranged near and usually between the branches offthe elevator-tube, 'serves to keep up the temperature therein. The spout S is connected to the elevator-tube in an air-tight manner, in order to avoid any interference with the draft through the reel.

Having described this invention, what we claim, and desire to secure by Letters Patent, 1s

In a grain drier, separator, and cleaner, the combination, with the air-tight case A, having the inside head, E, draft-openings c e, discharge S, making an air-tight connection with the elevator-tube T, and bottom hoppers, C, of the screen-reelD, steam-pipe grating under the same, suction-fan L, and pipe H, snbstan' tially as specied.

In testimony that we claim the above we have hereunto subscribed our names in the presence of two witnesses. I .i

LEMUEL CLARK PORTER. COLIN MCNICOL. Witnesses:

ADELBERT PORTER, I. S. H. PORTER. 

